lingo
Airman 1st Class
Vulcan bomber pilots used to make similar claims back in the day and that was bollocks too. However I do accept that I may well have a bit of a knowledge gap regarding the agility of flying wings generally and wuill research it more.
I don't know exactly what claims were made on behalf of the Vulcan, but in its early days I can tell you when at great altitude it was darn near invulnerable to fighters. The few fighters that could get to those heights were not able to do much as a turn of more than a few degrees would cause them to lose hundreds of feet of altitude. On the other hand the huge area of the Vulcans wing allowed it to remain up in the thin air.